Breeze arrester and the like



Nr w. 9

1,515,233 v E c. woonm BREEZE ARRESTER AND THE LIKE- Filed Sent. 7, 1922 Fatented Nov. II, 3.92

ERNEST C. VJOODIN, OF CHICAGO, ILLINOIS.

BREEZE ARRESTEE AND THE LIKE.

To all whom it may concern:

Be it known that I, ERNEST G. WooDIN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Breeze Arresters and the like, of which the following is a specification.

This invention has to do with certain improvements in breeze arresters and the like. The improvements to which the present invention relates have particular reference to breeze arresters for the coke breeze or debris generated in the operation of gas machines, but it will presently appear that the features of the invention are not limited to this particular use. Nevertheless, inasmuch as the features of the invention have especial reference to devices for catching the breeze from gas machines, I have illustrated and will describe the invention as applied to this particular class of service.

In operating gas machines for the manufacture of water gas and the like it is customary to use a very heavy draft. Furthermore, these machines are so constructed that they are intended to be charged with fresh material through ports in their upper portions. When .one of these ports is opened, the heavy draft existing within the machine causes a very powerful blast to blow upwardly through this port, carrying with it a considerable quantity of debris in the form of coke breeze, and so forth. Furthermore, during the time that this port is open, a substantial quantity of gas escapes from the machine. This gas is highly inflammable and is also poisonous and should not be allowed to enter the room where the workmen and operatives are located.

One of the objects of the present invention is to provide,- in conjunction with a as ma ohine, a stack arrangement for efiectively removing the dbris and gases at the time the port of the gas machine is opened, so that these products will be effectively re moved from the room where the workmen and operatives are located so as to eliminate danger from fire and danger of poisoning the men.

Another object of the invention is to provide means for efiec'ti'vely trapping and catching the coke breeze itself, so that it may be recovered and thus a considerable waste of raw material avoided. It is especially an object to make provision for Serial No. 586,583.

recovering this breeze while at the same time practically eliminating any danger of the entrance of the gas and material into the room where the people are located.

Another object of the invention is to pro- 1 vide a breeze arr-ester of very simple form and construction and one which can be cheaply manufactured from such material assheet metal and metal shapes.

Other objects and uses of the invention will appear from a detailed description of the same, which consists in the features of construction and combinations of parts hereinafter described and claimed.

In the drawings:

The figure shows a side elevation of a gas machine installation having applied thereto a breeze arrester embodying the features of the present invention.

Referring first to the figure, the gas machine is designated in its entirety by the numeral 3. It has in its upper portion a port 4 through which the coke and similar material may be introduced, which port is normally closed by means of a gate 5. This gate is shown as being in raised position, which is the position for opening the port and allowing the machine to be charged. In this open-position the gases and breeze are driven practically straight upwards by the heavy blast within the gas machine.

The roof of the plant or room in which the gas machine is located is designated by the numeral 6. In order to remove the gas and the breeze from the machine and prevent the same from entering the room within which the machine is located, I provide a stack 7 which reaches straight up from a point 8 somewhat above the top of the machine to a point 9 above the roof. The lower portion 10 of this stack is preferably flared out, .as shown in the figure, so as to eflec tively catch the gases and material driven upwards from the port 4.

If no effort were to be made to recover the coke breeze, etc., passing upwards through the stack, the construction thus far described would be sufficient. The stack should in any case be of sufficient size and capacity to effectively transfer the quantity of gas generated. In a typical installation the amount of this gas generated in the machine and which will be driven up through the port 4 when opened will be approximately 13,000 cubic feet per minute. In such installation, a stack 7- having an internal diameter of three feet six inches will have an internal passage of an area approximating 9.6 square feet. Consequently, the velocity of gas and breeze flowing up through the stack 7 will be approxlmately 1350 feet per minute. This velocity is amply suflicient to maintain the coke breeze particles in a state of suspension and cause them to flow up through the stack.

Above the top end 9 of the stack 7 is located a tapered hood 11. The lower end 12 of this hood has an opening somewhat larger than the top end of the stack itself, so that the material delivered straight up from the stack will surely be caught in the hood. A space 13 is provided between the top 9 of the stack and the bottom 12 of the hood, when space is large enough to allow the great bulk of the gas to be delivered outwardly and into the atmosphere without having to flow through the hood. In the above mentioned installation, this space 13 will have a vertical dimension of approximately one foot three inches.

The coke breeze and other solid particles of material striking the inner surface of the hood will rebound therefrom and be deflected off in a direction such that the angle of incidence is substantially equal to the' angle of impact. By forming the side walls 1 1 of the lower portion of the hood on an angle of or greater with respect to the horizontal, the material, striking against the side walls of the hood, will re bound in a direction which will carry it up wards through the hood, and by making this angle or greater, the particles of material can rebound and be delivered upwards along the hood practically without the need of any assistance from the current of gas itself.

The walls of the hood taper towards each other substantially to the point 15, and from that point upwards the hood itself is curved over, as at 16, with a continuous taper in itssize until at the point 17 it is facing more or less downwardly in direction. The taper in size of the hood is practically continuous, and the opposite walls of the hood draw together on practically a uniform angle measured by the approach of the side walls l-ltowards each other. In those cases in which these side walls 1 1 stand at an angle of substantially 70 with respect to the horizontal, they approach each other on an angle of substantially 30 of taper, and this amount of taper would be maintained substantially to the point 17. In like manner, in those cases in which the side walls 14. stand at an angle of substantially 80 to the horizontal, they approach each other at substantially 20 taper, and this amount of taper would be maintained substantially to the point 17.

in the illus ration of the installation previously mentioned, the hood tapers to a diameter of substantially twelve inches at the point 17, at which point the hood connects to a dowircolner 18, which continues on down through the pipe sections 19 into a receiving hopper 20, wherein the coke breeze and similar material is collected. A connection 21 leading from the lower end of the hopper and provided with a valve 22 serves as a convenient means for remov ing the coke breeze. A vent pipe 23 leads upwards from the hopper 20 to a point above the roof where any gas will be di charged,

The hood is provided with a vent connection 24 at a point near its end 17, so that the great hull; of the gas flowing through the head will be delivered through the vent 94.

Assuming the dimension of installation previously mentioned herein, the end 17 of the hood, having a diameter of twelve inches, will have an internalarea of 385% square feet. The gas velocity through this end of the hood will be approximately eight hundred feet per minute. This will mean a passage of approximately six hundred twenty-five cubic feet of gas per minute through the small end of the hood. The great bull: of this gas will be delivered through the vent 24 directly into the atmosphere. The remaining portion of the remaining 13,000. feet per minute, amounting to approximately 12,375 cubic feet per minute, will be discharged through the opening 13 with out traveling through the hood at all.

The operation of such an installation is this: The gas rising through the stack 7 has a suflicient velocity to carry the breeze particles along with it. When the opening 13 is reached, the great bulk of the gas is delivered directly into the atmosphere. The breeze particles themselves, owing to their high velocity, and also owing to the relatively sharp angle and long taper of the hood, will rebound back and forth on the inner surfaces of the hood and will 1naintain their general direction of travel without any substantial assistance from the velocity of the gas itself. Consequently, the velocity "f the gas in the hood does not need to be large in order to carry the particles of breeze with it, and in like manner the volume of delivered through the hood may also be "elatively snrall. The assage of the breeze particles through the hood is effected almost entirely by rebound, and the current of gas flowing through the hood is a secondary consideration.

lVit-h such an arrangementas the foregoing, the gases flowing through the stack 7 impart the necessary velocity to the breeze particles to enable said particles to be trans ferred through the hood largely by impact and rebound, and the great bulk of the gas itself is separated from the particles through the opening 13 directly into the atmosphere. This method of operation is to be clearly distinguished from one in which the taper of the hood is more abrupt, so! that a: large velocity of gas through the hood is necessary to bring about the desired transfer of the breeze particles; and it is also to be clearly distinguished from a method of operation in which the hood itself is perforated at numerous openings through which the gas may be delivered into the air instead of being a practically continuous in'iperforate structure as herein disclosed.

I claim:

1. The combination with a gas machine having an upwardly opening port for the delivery of gases and entrained breeze, of a vertical stack above and in a-ligmnent with said port and having its lower end spaced away from the port, a tapered hood located above and in alignment with the upper discharge end of said stack and spaced away therefrom a substantial distance to provide therebetween an opening of substantial size for the delivery of gases sidewise to the open air, the upper portion of said hood curving over with a constant and substantially uniform taper to a position substantially 180 from the original direction of the hood, a downwardly reaching connection at the lower reduced end of the hood, and a revent connection reaching upwardly from the outer face of the lower reduced end of the hood, the hood. tapering at an angle of sub stantially or less, substantially as described.

2. The combination with a gas machine having an upwardly opening port for the delivery of gases and entrained breeze, of a vertical stack above and in alignment with said port and having its lower end spaced away from the port, a tapered hood located above and in alignment with the upper discharge end of said stack and spaced away therefrom a substantial distance to provide therebetween an opening of substantial size for the delivery of gases sidewise to the open air, the upper portion of said hood curving over with a constant and substantially uniform taper through a bend of substantially 180 from the original direction of the hood, and a downwardly reaching connection from the lower reduced end of the hood, substantially as described.

ERNEST G. WOODIN. 

